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(ModeL) J. H. BAKER & G. P. SHEVLIN.

PIPE VISE.

No. 363,041.. Patented May 17, 1887.

UNITED STATES ATENT Erica.

JAMES H. BAKER AND GEORGE F. SHEVLIN, ()F SARATOGA SPRINGS NElV YORK.

PIPE-VISE.

SPECIFICATION forming part of Letters Patent No. 363,041,dated May 1'7, 1887.

Application filed November 1, 1886. Serial No. 217,050. (Model) To aZZ whom it may concern:

Be it known that we, .TAMEs H. BAKER and GEORGE F. SHEVLIN, of Saratoga Springs, in the county of Saratoga and State of New York, have invented an Improvement in Pipe-Vises, of which the following is a specification.

The object of this invention is to allow the V-shapedjaws to be opened with facility for the insertion or withdrawal of the pipe with out the necessity of rotating the clamping screw to such an extent as has heretofore been usual. One of the clamping -jaws is acted upon by the clampingscrew, as usual, and the other jaw is provided with a movable block that forms a resistance to the jaw when grasping the pipe, and this movable block can be partially rotated and drawn back into the head-block of the vise at the time the sliding jaw is opened for inserting or withdrawing the pipe.

In the drawings, Figure 1 is a plan view of the vise. Fig. 2 is an elevation of the same. Fig. Sis a cross section at the line a :0, Fig. 1; and Fig. 4 is an end view, partially in section, of the vise.

The body A of the vise is provided with the head-blocks A A The clamping-screw H passes through the head-block A, and be tween the head-blocks A and A is the slide 0, that supports the jaws B and G, that are Vshaped and formed with teeth upon their inner edges, and the jaw Q passes in between the two parts of the jaw B, as usual. There is a button-head at the inner end of the screw H, and this is received within a corresponding recess at the back of the jaw G, and there is a bar, G, riveted or bolted upon one side of the back part of the jaw G, to confine the button-head upon the screw H within its recess, so that the jaw G will be moved back and forth by revolving the screw H, and the rear part of the jaw G and the bar G extend below thejaw G and form guides at the sides of the slide 0, so as to retain thejaw in position but allow the same to be moved back and forth.

The two parts of the jaw B extend down at the sidesof and grasp the slide 0, so as to be guided therebyin the backward and forward movement of this jaw B, and saidjaw B is preferably in two parts riveted together, and there is at the back thereof a recess for the reception of the button-head 3 upon the blockingpiece F, and there is a circular stem, K, at the rear of the blockingpicce F with a T- shaped head, E.

The blocking-piece F is much wider in one direction than in the other, and in the headblock A a hole is east, through which passes the stem K,and the holeis also sufficiently large for the passage of the head E and to receive the blocking-piece F when in a vertical position, so that the jaw B can be drawn back by the stem K and head E until the jaw B rests against the inner face of the head-block A This allows the necessary opening between the jaws G and B for the insertion ofa pipe or red. The stem K and head E are now pushed upon and the jaw B slid up toward the pipe, and by the partial rotation of the head E and stem K the block F is turned into a liorizoir tal position and forms a resistance or abutment to hold the jaw B firmly,while the pipe is clamped by a few turns of the screw H.

By this improvement considerable time is saved and the wear upon the screw islessened and the pipe can be passed in between the jaws B and G with facility or removed therefrom.

At the outer end of the body A is an opening with rigid roundingjaws D D, into which a pipe or rod may be passed for bending or straightening the same, and the entire vise may be supported in any convenient manner. \Ve have shown a prismatic projection, I, at one side of the body A and a tubular poly onal hub, J, for receiving the projection I, and there is a flange, J, by means of which the hub Jean be fastened to a studding or to a bench or other support.

\Ve claim as our invention-- 1. The combination, with the body A, headblocks A A and the jaws G and B, and screw H, of the blocking piece or abutment F, having a button-head within a recess at the back of the jaw B, and the stem K and head E, for moving the parts endwise and for turning the blocking piece or abutment, the head-block A being perforated for thepassage of the stem K and head E and recessed for the reception of the block F when in one position, substahby which the blocking piece or abutment is tially as set forth. moved, substantially as set forth.

2. The combination, in a pipe-vise, of the Signed by us this 15th dayof October, A.D. V-shaped. grasping jaws, the body having .1886. 5 slides upon which the grasping-jaws move,

the head-b1 ocks above the body of the vise, a 4 g g fi clamping-screw passing through one of the J head-blocks and acting upon one of the jaws, Witnesses:

a blocking piece or abutment between one of J. W. CRANE,

[o the head-blocks and one of the jaws, and astem J EssE STILEs. 

